Tube-compressor.



No. 820,216. .PATBNTEDMAY s, 190

B. K. LEFFINGWELL & H. B. ELTONHEAD.

TUBE COMPRESSOR; APPLIOATION IILBD MAR. 91,1905.

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EVERETT K. LEEFINGWELL AND HARRY B. ELTONHEAD, OF WEST HAVEN,CONNECTICUT.

TUBE-COMPRESSOR.

Specification of Letters Patent.

Eatented May 8, 1906.

To all whom it vnoty concermq Be it known that we, EVERETT K. LEF-FINGWELL and HARRY B. ELTONHEAD, citizens of the United States, residingin West Haven, in the county of New Haven and State of Connecticut, haveinvented certain new and useful Improvements in Tube-Compressors, ofwhich the following is a specification.

This invention relates to that class of devices employed for compressinga rubber tube to prevent the flow of a fluid through the same. Suchclamps or compressors, sometimes called pinchcocks, are employed'in lieuof ordinary cocks on small rubber tubes, such as are connected withdouches and the like. Commonly a tube-compressor of this general classcomprises two jaws connected integrally at their ends by a broadbowspring having in it an aperture for the passage of the tube whichextends lengthwise of the jaws and the jaws are pressed together with aclamping-lever fulcrumed in lugs on one of the jaws, the latter havingflat clampingfaces.

The object of the present invention is to provide a tube-compressorwherein the tube extends transversely of the jaws and the jaws have aspecial conformation designed to produce a perfect closure and preventany leakage whatever through the tube past the compressor.

In the accompanying drawings, which illustrate an embodiment of theinvention, Figure 1 is a perspective view of the device, showing a tubein place and the compressor open. Fig. 2 is a similar view, but showingthe jaws closed on the tube. Fig. 3 is a front view of the device asseen in Fig. 2. Fig. 4 is a plan view of the compressor, showing itopen. Fig. 5 is a front view of the device as seen in Fig. 1.

The jaws a and b of the compressor are connected at one end by abow-sprin c, preferably integral with the jaws, and t ecompressing-lever d is fulcrumed in lugs e on the jaw a. These lugs orcheeks are relatively large and have in them apertures f for the passageof the rubber tube T, which, as before stated, extends transversely ofthe jaws.

In order to assure a perfect closure of the tube, each jaw of thecompressor has a longitudinal corrugation, which forms a rib g on onejaw and a groove h on the other jaw, whereby when the two jaws areclamped together on the tube the latter is crimped crosswise, as clearlyshown in Fig. 3. The camarm (1 on the compressing-lever is recessed atits operative end to engage the rib on the back of the upper j aw.

This compressor or pinch-cock enables the operator or user to utilizethe bow-spring c as a ring-handle, either to be engaged by the finger inmanipulating the device or for hanging up the tube on a hook.

It is not material that the rib 9 shall be on the jaw a and the groove hin the other jaw. The rib may as well be on the jaw b.

The compressing-lever 61 being of elbowshape and made from sheet metaland having work to perform which puts it under considerable strain atthe angle, this lever is corrugated over the angle and along its arm inorder to give it additional strength and rigidity.

Having thus described our invention, we claim A tube-compressor havingtwo jaws connected by a spring, said jaws being provided withlongitudinal correspondingly-shaped corrugations, upright lugs on one ofsaid jaws and a compressing-lever fulcrumed in said lugs said lugs beingprovided with apertures adapted to hold the tube to be compressedbetween the jaws and in a position transverse thereto. v

In witness whereof we have hereunto signed our names, this 28th day ofMarch, 1905, in the presence of two subscribing witnesses.

EVERETT K. LEFFINGWELL.

HARRY B. ELTONHEAD. Witnesses:

HENRY G. Hosn,

WILLIAM J. FIRTH.

